/*
 *  Licensed to the Apache Software Foundation (ASF) under one
 *  or more contributor license agreements.  See the NOTICE file
 *  distributed with this work for additional information
 *  regarding copyright ownership.  The ASF licenses this file
 *  to you under the Apache License, Version 2.0 (the
 *  "License"); you may not use this file except in compliance
 *  with the License.  You may obtain a copy of the License at
 *
 *        http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing,
 *  software distributed under the License is distributed on an
 *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 *  KIND, either express or implied.  See the License for the
 *  specific language governing permissions and limitations
 *  under the License.
 */

package org.apache.isis.viewer.dnd.view;

/**
 * Details where to move the focus to.
 */
public interface FocusManager {
    /**
     * The next view within the container to move the focus to; move to next
     * field.
     */
    void focusNextView();

    /**
     * The previous view within the container to move the focus to; move to
     * previous field.
     */
    void focusPreviousView();

    /**
     * The parent view within the container to move the focus to; move up to
     * containing view in the hierachy.
     */
    void focusParentView();

    /**
     * The first child view within the container to move the focus to; move down
     * to the first view within the current view.
     */
    void focusFirstChildView();

    void focusLastChildView();

    void focusInitialChildView();

    View getFocus();

    void setFocus(View view);
}
